Question

If 20% of a = b, then b% of 20 is the same as :
A) 4% of a
B) 6% of a
C) 8% of a
D) 10% of a

Answer 1

20% of a = b   

  = 20/100 a= b

b% of 20 = b/100 ×20 

   = 20a/100 × 1a/100

   = 4a / 100  

   = 4% of a.